The Detroit Free Press has a cool little article that nicely summarizes who gets what in the Chrysler/Fiat "relationship". It does a great job of simplifying all the corporate-speak that we've been hearing lately. Here's a snippet about what Chrysler is getting from Fiat:

The automaker gets access to technology in the form of vehicle platforms, engines and transmissions from Europe's fuel-efficiency leader.

In addition to three platforms for minicars, subcompacts and compacts, Fiat's family of 1.4-liter to 1.8-liter four-cylinder engines and its upcoming six-speed dual-clutch transmission are likely to be produced at Chrysler plants in North America.